package modelo.dao.implementacion;

import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.NClob;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.RowId;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Statement;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Map;

import modelo.dao.DAO;

public class ConectorBBDD {
	
	static Connection conexion;
	static Statement stmt;
	
	public static void iniciarConexion() throws ClassNotFoundException, SQLException {
		Class.forName(DAO.JDBC_DRIVER);
		System.out.println("Connecting to database...");
		conexion = DriverManager.getConnection(DAO.DB_URL,DAO.USER,DAO.PASS);	
		System.out.println("Creating statement...");
		stmt = conexion.createStatement();	
	}
	
	public static void cerrarConexion() throws SQLException {
		stmt.close();
		conexion.close();
	}
	
	/**
	 * @return devuelve null si no ha cambiado nada en la BD o si ocurrió algún error.
	 */
	public static ResultSet realizarConsulta(boolean actualizar, String consulta){
		try {
			
			if (actualizar){
				stmt.executeUpdate(consulta);				
				int count = stmt.getUpdateCount();
				if (count > 0){
					return new ResultSet() {
						
						@Override
						public <T> T unwrap(Class<T> iface) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public boolean isWrapperFor(Class<?> iface) throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean wasNull() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public void updateTimestamp(String columnLabel, Timestamp x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateTimestamp(int columnIndex, Timestamp x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateTime(String columnLabel, Time x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateTime(int columnIndex, Time x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateString(String columnLabel, String x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateString(int columnIndex, String x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateShort(String columnLabel, short x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateShort(int columnIndex, short x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateSQLXML(String columnLabel, SQLXML xmlObject)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateSQLXML(int columnIndex, SQLXML xmlObject)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateRowId(String columnLabel, RowId x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateRowId(int columnIndex, RowId x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateRow() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateRef(String columnLabel, Ref x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateRef(int columnIndex, Ref x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateObject(String columnLabel, Object x, int scaleOrLength)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateObject(int columnIndex, Object x, int scaleOrLength)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateObject(String columnLabel, Object x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateObject(int columnIndex, Object x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNull(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNull(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNString(String columnLabel, String nString)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNString(int columnIndex, String nString)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNClob(String columnLabel, Reader reader, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNClob(int columnIndex, Reader reader, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNClob(String columnLabel, Reader reader)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNClob(int columnIndex, Reader reader) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNClob(String columnLabel, NClob nClob)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNClob(int columnIndex, NClob nClob) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNCharacterStream(String columnLabel, Reader reader,
								long length) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNCharacterStream(int columnIndex, Reader x, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNCharacterStream(String columnLabel, Reader reader)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateNCharacterStream(int columnIndex, Reader x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateLong(String columnLabel, long x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateLong(int columnIndex, long x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateInt(String columnLabel, int x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateInt(int columnIndex, int x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateFloat(String columnLabel, float x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateFloat(int columnIndex, float x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateDouble(String columnLabel, double x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateDouble(int columnIndex, double x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateDate(String columnLabel, Date x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateDate(int columnIndex, Date x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateClob(String columnLabel, Reader reader, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateClob(int columnIndex, Reader reader, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateClob(String columnLabel, Reader reader)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateClob(int columnIndex, Reader reader) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateClob(String columnLabel, Clob x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateClob(int columnIndex, Clob x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateCharacterStream(String columnLabel, Reader reader,
								long length) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateCharacterStream(int columnIndex, Reader x, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateCharacterStream(String columnLabel, Reader reader,
								int length) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateCharacterStream(int columnIndex, Reader x, int length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateCharacterStream(String columnLabel, Reader reader)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateCharacterStream(int columnIndex, Reader x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBytes(String columnLabel, byte[] x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBytes(int columnIndex, byte[] x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateByte(String columnLabel, byte x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateByte(int columnIndex, byte x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBoolean(String columnLabel, boolean x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBoolean(int columnIndex, boolean x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBlob(String columnLabel, InputStream inputStream,
								long length) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBlob(int columnIndex, InputStream inputStream, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBlob(String columnLabel, InputStream inputStream)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBlob(int columnIndex, InputStream inputStream)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBlob(String columnLabel, Blob x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBlob(int columnIndex, Blob x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBinaryStream(String columnLabel, InputStream x,
								long length) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBinaryStream(int columnIndex, InputStream x, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBinaryStream(String columnLabel, InputStream x, int length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBinaryStream(int columnIndex, InputStream x, int length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBinaryStream(String columnLabel, InputStream x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBinaryStream(int columnIndex, InputStream x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBigDecimal(String columnLabel, BigDecimal x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateBigDecimal(int columnIndex, BigDecimal x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateAsciiStream(String columnLabel, InputStream x, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateAsciiStream(int columnIndex, InputStream x, long length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateAsciiStream(String columnLabel, InputStream x, int length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateAsciiStream(int columnIndex, InputStream x, int length)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateAsciiStream(String columnLabel, InputStream x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateAsciiStream(int columnIndex, InputStream x)
								throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateArray(String columnLabel, Array x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void updateArray(int columnIndex, Array x) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void setFetchSize(int rows) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void setFetchDirection(int direction) throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public boolean rowUpdated() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean rowInserted() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean rowDeleted() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean relative(int rows) throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public void refreshRow() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public boolean previous() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean next() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public void moveToInsertRow() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void moveToCurrentRow() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public boolean last() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean isLast() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean isFirst() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean isClosed() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean isBeforeFirst() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean isAfterLast() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public void insertRow() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public SQLWarning getWarnings() throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public InputStream getUnicodeStream(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public InputStream getUnicodeStream(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public URL getURL(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public URL getURL(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public int getType() throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public Timestamp getTimestamp(String columnLabel, Calendar cal)
								throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Timestamp getTimestamp(int columnIndex, Calendar cal)
								throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Timestamp getTimestamp(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Timestamp getTimestamp(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Time getTime(String columnLabel, Calendar cal) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Time getTime(int columnIndex, Calendar cal) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Time getTime(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Time getTime(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public String getString(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public String getString(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Statement getStatement() throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public short getShort(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public short getShort(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public SQLXML getSQLXML(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public SQLXML getSQLXML(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public RowId getRowId(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public RowId getRowId(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public int getRow() throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public Ref getRef(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Ref getRef(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public <T> T getObject(String columnLabel, Class<T> type)
								throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public <T> T getObject(int columnIndex, Class<T> type) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Object getObject(String columnLabel, Map<String, Class<?>> map)
								throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Object getObject(int columnIndex, Map<String, Class<?>> map)
								throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Object getObject(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Object getObject(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public String getNString(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public String getNString(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public NClob getNClob(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public NClob getNClob(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Reader getNCharacterStream(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Reader getNCharacterStream(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public ResultSetMetaData getMetaData() throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public long getLong(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public long getLong(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public int getInt(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public int getInt(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public int getHoldability() throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public float getFloat(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public float getFloat(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public int getFetchSize() throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public int getFetchDirection() throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public double getDouble(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public double getDouble(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public Date getDate(String columnLabel, Calendar cal) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Date getDate(int columnIndex, Calendar cal) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Date getDate(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Date getDate(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public String getCursorName() throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public int getConcurrency() throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public Clob getClob(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Clob getClob(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Reader getCharacterStream(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Reader getCharacterStream(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public byte[] getBytes(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public byte[] getBytes(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public byte getByte(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public byte getByte(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public boolean getBoolean(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public boolean getBoolean(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public Blob getBlob(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Blob getBlob(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public InputStream getBinaryStream(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public InputStream getBinaryStream(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public BigDecimal getBigDecimal(String columnLabel, int scale)
								throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public BigDecimal getBigDecimal(int columnIndex, int scale)
								throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public BigDecimal getBigDecimal(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public BigDecimal getBigDecimal(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public InputStream getAsciiStream(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public InputStream getAsciiStream(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Array getArray(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public Array getArray(int columnIndex) throws SQLException {
							// TODO Auto-generated method stub
							return null;
						}
						
						@Override
						public boolean first() throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
						
						@Override
						public int findColumn(String columnLabel) throws SQLException {
							// TODO Auto-generated method stub
							return 0;
						}
						
						@Override
						public void deleteRow() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void close() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void clearWarnings() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void cancelRowUpdates() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void beforeFirst() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public void afterLast() throws SQLException {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public boolean absolute(int row) throws SQLException {
							// TODO Auto-generated method stub
							return false;
						}
					};
				}
				
			} else {
				ResultSet rs = stmt.executeQuery(consulta);		
				if (rs.next()){ // Lo posiciona en la primera fila.	
					return rs;
				} else {
					return null;					
				}				
			}
			
		} catch(Exception e){
			e.printStackTrace();
		} 
		
		return null;
		
	}

}
